Re: [x86, vdso] BUG: unable to handle kernel paging request at d34bd000

[stefani]

Zitat von "H. Peter Anvin" <hpa@xxxxxxxxxxxxxxx>:

> On 03/10/2014 01:03 PM, Stefani Seibold wrote:
> > What is now the next step? Kick out the compat VDSO? Or should i
> > implement the dual VDSO. And what is now the preferred way to map the
> > VDSO into the user space? Using install_special_mapping() or map it
> > beyond the user stack?
> >
> > The is easiest and fastest way to get a working result is to do the non
> > compat VDSO only mapping using install_special_mapping(). The dual VDSO
> > would take a little bit more time.
> >
> > It would be great to have first a consensus about the design before i
> > start to implement ;-)
>
> The quick way to get something working is simply to reserve more than
> one page (two should presumably be enough) in the fixmap and adjust the
> link address of the VDSO accordingly.  This is not where we want to go
> in the long term, but it doesn't seem to make sense to try to do
> everything all at once -- we are already starting to push way too close
> to the 3.15 merge window.

Do you except a complete new patch set or an incremental patch based on the
current patch set?



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/